James baktle



(No Model.)

" J. BARTLE.

DOOR 0F GAS RETORTS.

No. 314,780. Patented Mar. 31, 1885.

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. w fi W m-WL %//z mplwr, Wnshinglon n c UNITED STATES JAMES BARTLE, 0ENOTTING-HILL,

PATENT OEEicE,

COUNTY OF MIDDLESEX, ENGLAND.

DOOR OF GAS-RETORTS.

SPECIFICATION forming part of Letters Patent No. 314,780, dated h Iarch31, 1885.

Application filed August 30, 1884. (No model.)- Patented in England Ju y30, I883, No. 3,723.

To all whom it may concern:

Be it known that I, JAMES BARTLE. a subj ect of the Queen of GreatBritain, residing in Notting Hill, Middlesex, England, have invented acertain new and useful Improvement Connected with Doors of Gas-Retorts,of which the following is a specification.

The object of this invention is to so fit or arrange a door of agasretort that a sliding rising action be given to it while beingtightened up by the screw, and also that a sliding falling action begiven to it to release it from contact with the face of the barrel,whereby the door is dislodged from the tar in an easy manner when beingreleased for opening, and insures a close fit without the usual luting.

For the purpose of my invention (which I show on two ordinary-shapedmouths of retorts at Figs. 1, 2, 3, and 4 of the annexed drawings) Iarrange the door A with the hingebolt hole of somewhat an oval shape, togive freedom for the door A to drop while being released from actualcontact with the face B of the barrel or mouth 0 when the back action ofthe screw D takes place. I make the central aperture or recess, E, inwhich the point of the tightening-screw D works, of conical shape, asclearly shown by the section, Fig. 5, the apex of the conical hole beingthe true center of the door A, and when the door is closed to by thecrossbar F and held in that position the point of the tightening-screwis caused to enter the aperture or recess E, and as the screw D isturned the doorA gradually rises by reason of the conical shape of theaperture E, while at the same time it-i. e., the door-is being putgradually into closer I contact by a sliding lifting action until theopening of the barrel 0 is completely sealed.

place to free the doorA for opening purpose that is to say, as thetightening-screw D is being turned back, the'door A drops by its ownweight from its hinge joint A, and so dislodges opening by thehand-lever F after said lever is lifted over the catch G, the door Abeing then swung open by the pin H of the lever F riding in the slot ofthe lip-piece I, which is attached to or formed with the door A.

I have only shown an oval and a Q shaped method of sealing the mouth bya sliding surface cont-act action, as before explained, can be adoptedor arranged for all other shapes.

The novel feature in this invention, and what I claim, is-

In combination with the retort G, the door A,- loosely hinged thereto,and having a cenlVitnesses:

RICHARD GoXE GARDNER, J AMES GEORGE N EW'MAN,

Both of 166 Fleet Street, London, England.

The same action, in the reverse order, takes 0 itself from the tar,which permits of a free month of a gas-retort in the drawings; but mytral conical recess, E, and the lever B, also

